Rosenborg[2] (Urban East Norwegian: [ˈrùːsn̩bɔrɡ]) is a neighbourhood in the city of Trondheim in Trøndelag county, Norway.

It is located east of Møllenberg, south of Lademoen, north of Tyholt, and west of Persaunet.

The eastern part of Rosenborg also borders to Kristiansten Fortress and the surrounding park.

There is also a large amateur football arena that among others hosts the women's team Trondheims-Ørn.

The area also has given name to the Norwegian Premier League team Rosenborg Ballklub, that now is located at Lerkendal.